The mc is just an ordinary high schooler living a dull school life. One day he finds something that catches his interest on online shop. A brainwashing bracelet, just like the name, it will make the wearer be able to hynopsis the target and do what they want. A few days later, his cousin Kaori and Rina visited his house. Mc was entrusted to become a bodyguard of the two because their parents went on business trip. Being in the same house with a thicc plumpy girl can be too stimulating for a healthy a boy like mc. It’s the perfect time to try the newly bought brainwashing bracelet!.